JP2009014265A - Outdoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner capable of defrosting by comprising a heat transferring portion on a moving unit for defrosting, to transfer the heat from a heating portion to a heat exchanger. <P>SOLUTION: In this outdoor unit of the air conditioner provided with a compressor and the heat exchanger on a bottom plate, and further comprising the moving unit 6 for defrosting the heat exchanger, the moving unit 6 is composed of a heat transfer brush 7 kept into contact with the heat exchanger, a defrosting portion 8 comprising a heat transferring member 17 for transferring the heat by the heating portion 16 to the heat transfer brush 7, a driving portion 9 for vertically driving the defrosting portion 8, and a supporting portion 10 for movably supporting the defrosting portion 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a structure that can effectively defrost a wide range of a heat exchanger.

  With respect to a conventional outdoor unit of an air conditioner, as described in JP-A-10-246471, as a removal structure for removing frost attached to an outdoor heat exchanger, an outdoor unit as shown in FIGS. 6 to 8 is used. A compressor b, an outdoor heat exchanger c, a capillary d, and a four-way valve e are provided in a frame body a of the machine, and a blower g is provided in a blower path f where the outdoor heat exchanger c is provided, and the blower path f and compression There is one in which a partition plate h is provided between a mechanical part such as a machine b. During the heating operation, the refrigerant that has been pressurized by the compressor b and becomes high in temperature is radiated and liquefied by the indoor heat exchanger i, and the liquid refrigerant flows into the outdoor heat exchanger c through the capillary d and is vaporized. Air flowing through the air passage f is cooled. One end ka of the heat radiating plate k is attached to the compressor b that generates heat during operation or the discharge pipe j of the compressor b, and the other end kb, kb ′ of the heat radiating plate k is connected to the frame body l of the outdoor heat exchanger c or The position where the other end kb, kb ′ of the heat radiating plate k is fixed is a portion where ice remaining in the outdoor heat exchanger c at the end of the defrosting operation adheres. With this structure, the heat of the compressor b is transferred to the outdoor heat exchanger c, so that frost formation is suppressed during the heating operation and the frost adhering to the outdoor heat exchanger c is melted during the defrosting operation. (For example, refer to Patent Document 1).

  In this structure, as described above, the other ends kb and kb ′ of the heat radiating plate k are fixed toward the frame body l or the heat radiating fins m of the outdoor heat exchanger c. The position where kb ′ is fixed is a portion to which ice remaining in the outdoor heat exchanger c at the end of the defrosting operation adheres, and the heat generated by the compressor b is dissipated to the outdoor heat exchanger c. The defrosting can be performed by transferring heat to a limited range in the vicinity of the other ends kb and kb ′ of the plate k.

Thus, since it is not the structure which transfers the heat of the compressor b over the whole outdoor heat exchanger c, and defrosts, the frost adhering to the whole outdoor heat exchanger c is the heat sink mentioned above. It was difficult to effectively defrost by heat transfer from k.
JP-A-10-246471

  Then, this invention was made | formed in order to solve the subject mentioned above, Comprising: It aims at providing the outdoor unit of the air conditioner which enabled it to effectively defrost the wide range of a heat exchanger. .

  In order to achieve the above-described object, the present invention has the following features.

An outdoor unit of an air conditioner in which a compressor and a heat exchanger are arranged on a bottom plate, and a moving unit that defrosts the heat exchanger by heat generation of a heat generating unit is provided,
The moving unit includes a heat transfer member that comes into contact with the heat exchanger, a heat transfer member that transfers heat from the heat generation unit to the heat transfer member, and the defrosting unit up and down. It is characterized by comprising a drive unit that is moved and a support unit that is movably supported.

  The heat transfer body may be a heat transfer brush.

  Further, the moving unit is characterized in that it stops for a predetermined time in the vicinity of the lower end of the heat exchanger.

  ADVANTAGE OF THE INVENTION According to this invention, the outdoor unit of the air conditioner which enabled it to defrost effectively the wide range of a heat exchanger can be provided.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an internal structure of an outdoor unit of an air conditioner according to the present invention, FIG. 2 is an explanatory view of a main part of the outdoor unit of the air conditioner according to the present invention, and FIG. 2 (B) is a side view, FIG. 3 is an explanatory view of a main part of an outdoor unit of an air conditioner according to the present invention, FIG. 3 (A) is a perspective view, and FIG. 3 (B) is FIG. 3 (A). FIG. 3 (C) is a diagram showing another example, and FIG. 4 is an explanatory view of the main part of the outdoor unit of the air conditioner according to the present invention, and FIG. 4 (A). Is a perspective view, FIG. 4 (B) is a side view, FIG. 5 is an explanatory view of a main part of an outdoor unit of an air conditioner according to the present invention, FIG. 5 (A) is an exploded perspective view, and FIG. It is b arrow line view shown to FIG. 5 (A).

  As shown in FIG. 1, an outdoor unit of an air conditioner according to the present invention has an upper portion of a bottom plate 1 divided into a compressor chamber and a heat exchanger chamber by a partition plate 2 erected on the upper portion of the bottom plate 1. The compressor 5 is provided in the compressor chamber, and an electrical component 12 is provided in the upper portion of the compressor 5, and the heat exchanger 3 is formed in an L shape in plan view in the heat exchanger chamber; A blower fan 4 facing the long side portion of the heat exchanger 3 is provided.

  The heat exchanger 3 is composed of a large number of heat radiation fins 3a arranged in parallel at equal intervals, and a heat transfer tube 3b through which a refrigerant flows in a direction orthogonal thereto.

  The bottom plate 1 is covered with an outer cylinder 13 having a suction port (not shown) that faces the heat exchanger 3 and sucks outside air, and an upper surface portion of the outer cylinder 13 is covered with a top plate 14. A front panel 15 that constitutes a discharge port for discharging the air heat-exchanged by the heat exchanger 3 is provided on the front face facing the blower fan 4.

  The bottom plate 1 is integrally formed with flanges 1a standing upward on its four sides, whereby the strength is enhanced and drain water dripped from the heat exchanger 3 flows out to the surroundings. However, it is led to a drain outlet (not shown) to be drained.

  The top plate 14 is integrally formed with flanges 14a that hang downward on its four sides, whereby the strength is enhanced and the upper edges of the outer body 13 and the front panel 15 are connected to the flanges 14a. It is possible to align the position easily and accurately.

  The heat exchanger 3 may cause a ventilation resistance due to frost adhering, which may reduce the performance as the heat exchanger 3 or in the outside air sucked from the suction port. Since a part of the dust contained in the air may be attached, the performance as the heat exchanger 3 may be deteriorated, so that frost and dust attached to the heat exchanger 3 can be removed. A moving unit 6 is provided to be movable.

  Next, the configuration of the moving unit 6 will be described in detail with reference to FIGS.

  The moving unit 6 can defrost the heat exchanger 3 by using a heat transfer brush 7 as a heat transfer body that is brought into contact with the heat exchanger 3 and transfers heat from a heat generating portion to be described later. After the dust adhering to the heat exchanger 3 is removed, the collected dust can be discharged to the outside.

  That is, the moving unit 6 includes a heat transfer member 17 in which a heat transfer brush 7 made of a metal thread that removes dust and frost attached to the fins 3a and the heat transfer tubes 3b constituting the heat exchanger 3 is installed. Part 8, a drive part 9 for moving the defrosting part 8 downward and upward, a support part 10 for supporting downward and upward movement, and the dust removed by the heat transfer brush 7 is discharged to the outside. The discharge unit 11 is configured.

  The discharge part 11 is provided in a bulging part 1b formed so that a part of the bottom plate 1 bulges upward, thereby condensing dripped from the heat exchanger 3 to the bulging part 1b. The water flows on the bottom plate 1 as shown by an arrow e shown in FIG.

  As shown in FIG. 2 (A), the heat transfer member 17 having heat transfer is connected to the heat generating portion made of the heater 16 in a heat transfer manner, so that the heat generated by the heater 16 is sequentially made of metal yarn. It is configured to transfer heat to the thermal brush 7.

  As a result, the heat transfer brush 7 comes into contact with the surface of the heat exchanger 3 to which dust and frost are adhered and moves along the heat exchanger 3 so that defrosting and dust removal can be performed. It becomes the composition which was made.

  As shown in FIG. 3B as an example, the heat transfer brush 7 implanted in the heat transfer member 17 has a configuration in which a thick brush 7a rich in elasticity and a thin brush 7b having flexibility are combined. Thus, frost and dust attached to the fins 3a and the heat transfer tubes 3b can be effectively removed.

  Alternatively, as another example, as in a heat transfer brush 7 ′ shown in FIG. 3C, the frost and dust attached to the fins 3a and the heat transfer tubes 3b are removed by lowering while rotating in the direction of the arrow. You may be able to do that.

  As shown in FIG. 2 (A), FIG. 4 (A), and FIG. 4 (B), the drive unit 9 is provided near the upper end of the heat exchanger 3 and houses a drive motor (not shown). A case 9a, a sprocket 9b connected to a drive motor in the drive case 9a, a pulley 9c provided in the vicinity of the bottom plate 1, and a belt 9d stretched between the sprocket 9b and the pulley 9c. It is configured.

  The belt 9d is driven by the attachment portion A to drive the sprocket 9b in the direction of arrow a 'shown in FIG. 4B so that the defrosting portion 8 can be lowered as shown by arrow a. The defrosting part 8 is attached so that it can raise by driving 9b in the reverse direction.

  The moving unit 6 is an inner space on the leeward side of the heat exchanger 3 and provided on the blower fan 4 side, so that the outdoor unit is not enlarged, and the heat exchanger It is the structure attached along the 3 fin 3a so that a movement to an up-down direction was possible.

  As a result, the heat transfer brush 7 is configured to face the leeward side of the heat exchanger 3 and moves deeply into the plurality of fins 3a in which the tip portions of the heat transfer brush 7 are arranged in parallel. By doing so, it has a function of collecting dust on the upper portion of the bottom plate 1 while removing frost and dust adhering to the fins 3a and the heat transfer tubes 3b orthogonal thereto.

  The drive unit 9 drives the drive motor every predetermined integrated operation time of an outdoor unit or an indoor unit to which the outdoor unit is connected, and transmits a driving force to the belt 9d to transmit the drive unit 9 and the defroster unit 8 and the same. The heat transfer brush 7 implanted in the heat transfer member 17 in the defrosting unit 8 is moved.

  Thus, the heat exchanger 7 is installed in the heat transfer member 17 in the defrosting unit 8 to be moved by the drive unit 9 every time the above-described predetermined accumulated operation time elapses. The frost and dust adhering to 3 can be removed.

  Further, the discharge part 11 is provided on the bottom plate 1 corresponding to the heat transfer brush 7 planted on the heat transfer member 17 and is opened when the defrosting part 8 is lowered and is closed when it is raised. It has a configuration including a discharge port 11a provided with an opening / closing lid 11b having a support portion 11c.

  When the heat transfer brush 7 implanted in the defrosting section 8 and the heat transfer member 17 is removed near the lower end of the heat exchanger 3 while removing frost and dust adhering to the heat exchanger 3, By opening the opening / closing lid 11b, it is possible to discharge to the outside from the discharge port 11a.

  Further, when the moving unit 6 is lowered to the vicinity of the lower end portion of the heat exchanger 3 and then returns to a predetermined position near the upper end portion of the heat exchanger 3, the blower fan 4 is driven for a predetermined time. It becomes the composition which was made.

  As a result, the dust that is slightly left on the surface of the heat exchanger 3 and is about to be separated from the heat exchanger 3 is discharged together with the discharge air flow discharged from the discharge port by the blower fan 4. You will be able to vomit.

  As shown in FIGS. 5 (A) and 5 (B), the support portion 10 is composed of a roller guide 10a capable of guiding the guide roller 8b provided in the defrosting portion 8 downward or upward. The defroster 8 is supported so that it can be lowered or raised along the heat exchanger 3.

  The guide roller 8b includes a small-diameter portion and a large-diameter portion, and the roller guide 10a accommodates a slit portion corresponding to the small-diameter portion and the large-diameter portion so as to be movable up and down. It is the structure provided with the accommodating part to perform.

  As shown in FIG. 3 (B), when the moving unit 6 stops at a predetermined position near the upper end portion of the heat exchanger 3, the top plate 14 and a flange 14a suspended from the four sides thereof are used. Since it is covered, the outside air sucked from the suction port is less likely to directly hit, and air resistance to the air flow toward the heat exchanger 3 is prevented.

  Next, the operation of the moving unit 6 will be described based on the configuration of the moving unit 6 described above.

  When the heat exchanger 3 is not cleaned or defrosted when the outdoor unit and the indoor unit connected to the outdoor unit are not operated or operated, the mobile unit 6 is near the upper end of the heat exchanger 3. It stops at a predetermined position.

  The moving unit 6 is driven by the drive unit 9 and descends along the heat exchanger 3 in the defrosting unit 8 that is driven by the driving unit 9 for each of the above-described integrated operation time of the outdoor unit and the indoor unit connected to the outdoor unit. The heat transfer brush 7 implanted in the heat transfer member 17 removes frost and dust adhering to the heat exchanger 3.

  The open / close lid 11b is driven by the drive unit 9 as shown by an arrow a in FIG. 2 (B), and is a pressing body projecting from the lower part of the defrosting unit 8 when the defrosting unit 8 is lowered. By being pressed by 8a, the discharge port 11a is pushed downward as indicated by arrow c against the urging force indicated by arrow b by the urging spring 11d provided on the pivotal support portion 11c. The dust that has been opened and removed from the discharge port 11a and removed by the heat transfer brush 7 is discharged to the outside as indicated by an arrow d.

  The defrosting section 8 from which frost and dust have been removed from the heat exchanger 3 moves upward and stops at a predetermined position near the upper end of the heat exchanger 3, and the opening / closing lid 11b by the pressing body 8a. The discharge port 11a of the bottom plate 1 that has been opened by being pressed is closed by the opening / closing lid 11b that rotates about the pivotal support portion 11c by the urging force of the urging spring 11d.

  After the defrosting section 8 stops at a predetermined position near the upper end of the heat exchanger 3, the blower fan 4 is driven for a predetermined time, and dust left in the heat exchanger 3 is removed from the discharge port. Stop after exhaling.

  As described above, according to this configuration, it is possible to prevent the heat exchanger 3 from being deteriorated in performance due to frost adhering to the heat exchanger 3, and to remove the moving unit 6. The frost part 8 is covered with the top plate 14 provided with the flange 14a so as not to attach a part of the dust contained in the outside air sucked from the suction port, and the heat exchanger 3 is automatically cleaned. Thus, the outdoor unit of the air conditioner is configured such that the dust removed from the heat exchanger 3 can be discharged to the outside.

It is a perspective view which shows the internal structure of the outdoor unit of the air conditioner by this invention. It is principal part explanatory drawing of the outdoor unit of the air conditioner by this invention, FIG. 2 (A) is a perspective view, FIG.2 (B) is a side view. It is principal part explanatory drawing of the outdoor unit of the air conditioner by this invention, FIG. 3 (A) is a perspective view, FIG.3 (B) shows an example of AA sectional drawing shown to FIG. 3 (A), FIG. 3C shows another example. It is principal part explanatory drawing of the outdoor unit of the air conditioner by this invention, FIG. 4 (A) is a perspective view, FIG.4 (B) is a side view. It is principal part explanatory drawing of the outdoor unit of the air conditioner by this invention, FIG. 5 (A) is a disassembled perspective view, FIG.5 (B) is a b arrow line view shown to FIG. 5 (A). It is sectional drawing of the outdoor unit and indoor unit which show the outdoor unit slow frost structure of the air conditioner by a prior art example. It is a longitudinal cross-sectional view of the outdoor unit of the air conditioner by a prior art example. It is a perspective view which shows the Example of the outdoor unit of the air conditioner by a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottom plate 1a Flange 1b Expansion part 2 Partition plate 3 Heat exchanger 3a Fin 3b Heat transfer tube 4 Blower fan 5 Compressor 6 Moving unit 7 Heat transfer brush 7a Thick brush 7b Fine brush 8 Defrosting part 8a Press body 8b Guide roller 9 Drive part 9a Case 9b Sprocket 9c Pulley 9d Belt 10 Support part 10a Roller guide 11 Discharge part 11a Discharge port 11b Opening / closing lid 11c Pivot part 11d Biasing spring 12 Electrical part 13 Outer body 14 Top plate 14a Flange 15 Front panel 16 Heater 17 Thermal member

Claims (3)

An outdoor unit of an air conditioner in which a compressor and a heat exchanger are arranged on a bottom plate, and a moving unit that defrosts the heat exchanger by heat generation of a heat generating unit is provided,
The moving unit includes a heat transfer member that comes into contact with the heat exchanger, a heat transfer member that transfers heat from the heat generation unit to the heat transfer member, and the defrosting unit up and down. An outdoor unit for an air conditioner, characterized by comprising a drive unit to be moved and a support unit to be movably supported.   The outdoor unit for an air conditioner according to claim 1, wherein the heat transfer body is formed of a heat transfer brush.   The outdoor unit for an air conditioner according to claim 1 or 2, wherein the moving unit is stopped in the vicinity of a lower end portion of the heat exchanger for a predetermined time.

Images